partial default alphanumeric_keys 
xkb_symbols "basic" {

    // Describes the differences between a very simple en_US
    // keyboard and a very simple U.K. keyboard layout

    include "macintosh_vndr/us"

    name[Group1]= "United Kingdom - Mac";

    key <AE02> {	[               2,              at,         EuroSign	]	};
    key <AE03> {	[               3,        sterling,       numbersign	]	};
    key <TLDE> {	[         section,       plusminus ]	};
    key <LSGT> {	[           grave,      asciitilde ]	};
    
    include "level3(ralt_switch)"
};
